Proposal: add ifM and whenM to Control.Monad

[Evan Laforge]

On Mon, Apr 21, 2014 at 11:19 AM, Bardur Arantsson <spam at scientician.net> wrote:
> On 2014-04-21 17:47, Edward Kmett wrote:
>> I, for one, could get behind just taking ifM, whenM, unlessM for these
>> operations, proper naming conventions aside.
>>
>> They've been independently reinvented in 60+ packages with these exact
>> names.
>>
>> If we do this, over time we'll save another 60+ packages the trouble of
>> doing the same thing.
>
> +1 (for the proposal, based on exactly the above summary)

+1 from me too, because I have the same functions with these names in
my non-cabal packages.

There might be a lot of non-cabal whenM etc. out there.